Dtc P0416 Secondary Air Injection System Switching Valve B Circuit Open

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Gr-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT AIR INJECTION VSV RELAY (AI VLV)

CHECK AIR INJECTION VSV RELAY (AI VLV) (POWER SOURCE)

CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION VSV RELAY (AI VLV))

DTC P0416 Secondary Air Injection System Switching Valve "B" Circuit Open

DTC P0417 Secondary Air Injection System Switching Valve "B" Circuit Shorted


DESCRIPTION

The ECM operates the air injection VSV relay (AI VLV) which causes the No. 2 emission control valve to operate.

DTC No.
DTC Detection Condition
Trouble Area
P0416
Open or short in the air injection VSV relay (AI VLV) circuit for 3 seconds (1 trip detection logic).
  1. Open or short in air injection VSV relay (AI VLV) circuit
  2. Air injection VSV relay (AI VLV)
  3. ECM
P0417
Open or short in the air injection VSV relay (AI VLV) circuit for 3 seconds (1 trip detection logic).
  1. Open or short in air injection VSV relay (AI VLV) circuit
  2. Air injection VSV relay (AI VLV)
  3. ECM

MONITOR DESCRIPTION

These DTCs are designed to detect a malfunction in the air injection VSV (AI VLV) relay circuit. When the system is normal, the battery voltage is applied to terminal AIR1 of the ECM while the air injection VSV (AI VLV) relay is turned off, and the battery voltage is not applied to terminal AIR1 of the ECM while the air injection VSV (AI VLV) relay is turned on. The ECM illuminates the MIL and stores a DTC when either one of the following conditions is detected.
  1. The battery voltage is not applied to terminal AIR1 while the air injection VSV (AI VLV) relay is off.
  2. The battery voltage is applied to terminal AIR1 while the air injection VSV (AI VLV) relay is on.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System. Dtc P0416 Secondary Air Injection System Switching Valve B Circuit Open


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses of circuits related to this system before performing the following inspection procedure.
HINT:
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.INSPECT AIR INJECTION VSV RELAY (AI VLV)

  1. Inspect the air injection VSV relay (AI VLV) (Click here).



NG
REPLACE AIR INJECTION VSV RELAY (AI VLV)
OK


2.CHECK AIR INJECTION VSV RELAY (AI VLV) (POWER SOURCE)

  1. Remove the air injection VSV relay (AI VLV).



    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-Fe Engine Control.Sfi System. Dtc P0416 Secondary Air Injection System Switching Valve B Circuit Open

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    Air injection VSV relay (AI VLV) terminal 2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Air injection VSV relay (AI VLV) terminal 5 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *1
    		Engine Room Relay Block
    *2
    		Air Injection VSV Relay (AI VLV)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION VSV RELAY (AI VLV))

  1. Remove the air injection VSV relay (AI VLV).

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    Air injection VSV relay (AI VLV) terminal 1 - C45-60 (AIR1)
    		Always
    		Below 1 Ω
    Air injection VSV relay (AI VLV) terminal 1 or C45-60 (AIR1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)